Whats the deal with MAO coatings?

Correllux · 2023-03-26T02:09:58.502Z

No, you will never ever see lead or mercury on a light as a result of anodizing. I suppose it would be possible if anyone painted lights, but who does that. The chemistry of anodizing wouldn’t permit those things to be involved and end up with a functional finish.

I’ve heard more stories about brass and copper from China as it’s often an “unclean” mix of scrap…whether that matters just depends on the end use I guess. But that said, if you were to worry about lead in a flashlight host it would be from brass…potentially. There’s been so much litigation and legislation regarding lead (and brass as well…plumbing) all around the world that most brass these days is a very very low content of lead and most of it never had a lot to begin with anyway (it’s of benefit in machining for a little lubricity and better surface finish…or used to be…today’s tooling and cnc capabilities mitigate that a lot). All of those little brass trinkets and edc bits and decorative things…? Might be wise not to rub on those a whole lot. lol

Correllux · 2023-03-26T02:12:30.757Z

I don’t know if green is the right word…potentially less chemical pollution (from vapors and/or liquid spills and disposal). MAO takes a whole lot more electricity to produce so in green terms someone might need to math all that out to see how much benefit overall there is vs. standard anodizing methods.

Correllux · 2023-03-26T02:14:04.735Z

flashburn:

MAO makes amorphous aluminium oxide.
Corundum is a crystal.
Chemical sum identical, but totally different material.

Sorry, just saw this. You may want to read further about MAO. Because of the much higher voltages that amorphous beginning does in fact end up as crystalization in the final finished coating. Regular anodizing is also considered amorphous, btw.

Valynor · 2023-03-26T02:32:46.337Z

elendur:

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I have to say this pic single-handedly convinced me not to order my next Hanklight in MAO - even though I like the colour.
If it wears off THAT quickly, it’s not really a good enough coating. Maybe Hank finds a better company to do this treatment later on but for now this is quite meh.

NeutralFan · 2023-03-26T02:37:34.178Z

The Cyanski MAO looks very good (and different than Convoy/Emisar) and perhaps is more durable: REVIEW Cyanski P25 V2.0 MAO

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darosk · 2023-03-26T05:57:39.009Z

Yes, hence my putting ‘green’ in quotation marks. Not just the actual process itself but I doubt there’s much done in Chinese factories that are truly green.

Jeffgoldblum · 2023-03-26T06:51:52.972Z

BortyMcBortface:

Yeah, years ago in a thread we called it Chinese aluminum.
I would be interested to know what it really is.

And the anodizing, i have always wondered if its actually safe. For all we know it could be high in lead. Or even Mercury.
Surprisingly many Corelle dishes made before 2005 have high levels of lead
I have always washed my hands after using a flashlight.

I mean it could be any of a billion different alloys. Who knows.

I wash my hands all the time anyways. (Im actually for real, by a doctor, diagnosed OCD solely because he said I washed my hands far too much. This was before covid. Bet I don’t look too OCD now eh? Dumb doctors) but anyways…

I got curious about this and started looking at other things I own that are anodized aluminum. I have this SharpStone® herb grinder I got 12 years ago. Somewhat of a higher end grinder. I think I ordered it right from SharpStone and paid like $33 for it. It’s not HA III anodized it’s just “anodized” and it’s not aerospace aluminum it is “made from aluminum rod”(sic). It’s been through everything, been everywhere, seen stuff that not grinder should have to see. It’s been used everyday, many times a day, by many different people, for 12 years. It’s never once been fully cleaned and definitely never been lubricated. The opposite really.

But it’s holding up well. The anodizing is definitely worn in alot of places and scratched off in places where it was dropped onto concrete, but I’ve seen year old flashlights that look 10x worse than this. I’d say this is better anodizing and stronger aluminum than the flashlights I have. But we’ll see how they look in 12 years. And I’ve never had to lubricate the threads, it’s full of sticky resin constantly, and it still spins and spins.

I think theres trace amounts of lead in almost everything.
Corelle is high end stuff. So if they have lead probably everyone else does. Anything porcelain probably does when you scrape off the coating. Same with stainless steels. And probably most of our utensils too under the chromium. And most of our drinking glasses. Not just the crystal ones where lead is added intentionally but any made of recycled glass or any with painted glass ones for sure, like the ones with cartoon characters for kids.

I think lead is more of an issue for kids anyways. Less of an issue for adults. Still probably not great. But I shoot lead bullets and use leaded solder so w/e.

Everything is poison. Don’t get me started on toothpaste and mouthwash, or any cleaning product. You know how many carcinogens and toxins are in soap? There’s a reason we wash it off our hands. It’s not just to “wash the germs away” lol.

I went around my house with a high end real time air quality monitor and VOC detector once and the the highest levels weren’t where I thought they’d be, in the garage with all the weedkiller and insecticide and paint thinners and engine oils and automotive greases and where the car is parked at night in the winter, or under the bathroom sink with the toilet bowl cleaner and draino. The highest levels were in every drawer/cabinet/closet we had clothes or sheets in. The second highest levels were on our beds, on the sheets. And the 3rd highest levels were the dogs! The freakin dogs!

Nowhere is safe.

NeutralFan · 2023-03-26T14:48:08.551Z

Jeffgoldblum:

And the 3rd highest levels were the dogs! The freakin dogs!

Is that why the dog in your avatar has that look on their face?

flashburn · 2023-03-26T18:17:47.604Z

Did one ever try to do a NEMP finish?

Jeffgoldblum · 2023-03-26T18:36:41.168Z

NeutralFan:

Is that why the dog in your avatar has that look on their face?

Lol that’s exactly why

I forgot part of that story btw. I borrowed this thing from a buddy cuz this one was like $2 grand. So i throw it in my car to bring it back, left it running in the passenger seat to see what levels in the car were like.

Started the engine, realized I forgot idk some amazon return or something, ran back inside, the car was idling for idk like 45 seconds tops, got back in, and the levels on the meter for everything were thru the roof. Like sooooo many many times higher than any acceptable limit. Like some of the toxic gases were like 1000x times past the OSHA PEL. Even after driving around with the windows down for 20 minutes nothing ever got lower than like 10x the limit for anything. Stopped eating lunch in my car for awhile after that lol.

flashburn · 2023-03-27T16:59:32.760Z

HAHAHA. Time for a change!

elendur · 2023-03-27T19:31:44.645Z

Take a look at the air cabin filter. Thst should be changed regularly, it gets pretty nasty. Change the motor air intake filter too while you’re at it if it hasn’t been done.

firelane404 · 2023-07-30T21:39:05.898Z

I know this is an older thread, but I thought I’d share my experience. Got a convoy T3 MAO earlier this week and it’s already scratching. Fitting on the pocket clip took a huge chunk of the coating right off.

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Like you all were saying, I wonder if this is a result of an imperfect process by the Chinese manufacturers, but I wonder if it’s just inherent to the coating. The study posted earlier showed that the MAO was far better at resisting corrosion compared to the anodizing, not necessarily more durable to scratches and wear.

Jeffgoldblum · 2023-07-30T21:56:02.685Z

Yikes, that’s a pretty bad scuff. Worse than any of the pocket clip marks on my regular anondized lights.

MAO is supposed to be more abrasion resistant too. But all this is only if it’s done right. I think they’re still working out the kinks

NeutralFan · 2023-07-30T22:22:16.112Z

Ouch - that looks pretty bad!!!

I’ve been taping plastic sheets on my flashlights when I install and remove pocket clips. The sheets come from the Salonpas patches that my wife uses. They are fairly durable and slippery, and so far have prevented scratches.

Here’s what they look like when I installed the clip on my MAO S2+.

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zoulas · 2023-07-31T01:07:43.146Z

I can see doing that to install the clip but how does it help to remove the clip? Isn’t the goal to get it between the metals?

zoulas · 2023-07-31T01:09:08.093Z

Yea, I agree MAO has proven itself to be a waste of time. Makes the light so much more delicate.

horzuff · 2023-08-01T07:33:22.778Z

I’m not that critical of MAO. In my experience, in case of Emisar it’s pretty much the same durability as the cyan ano. Or slightly better. Just gets dirty easier, but it’s a case of rubbing the muck off.

And the silky feel and unique color more than make up for the affinity to dirt, for me at least

Henk4U2 · 2023-08-01T08:01:35.466Z

I don’t think it is the MAO in itself. It is very expensive to install tools for a task that is seldom used. So it’s outsourced. The quality and the experience of the sub (sub) contractors who do the actual work is essential for the result.

NeutralFan · 2023-08-04T02:05:56.379Z

I just slide the plastic sheets under the clip arms, tape them down, and then pull the clip off the flashlight.

Sometimes it’s a little hard to get them under the clip since it’s tight on the flashlight, but I’ve always managed to do so.